@article {abdel2024mathematical,
	title = {Mathematical analysis of the new $\alpha$-difference operator with an application to prey-predator model with harvesting. Quadratic invariant},
	journal = {Annals of Mathematics and Physics},
	volume = {7},
	number = {1},
	year = {2024},
	note = {n/a},
	pages = {054{\textendash}063},
	abstract = {n/a},
	author = {H.I. Abdel-Gawad and Ahmed H. Abdel-gawad}
}
